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SubjectRe: [PATCH v2 2/2] x86/CPU/AMD: Derive CPU topology from CPUID Fn0xB when available
On Wed, Apr 04, 2018 at 01:45:14AM -0500, Suravee Suthikulpanit wrote:
> Derive topology information from Extended Topology Enumeration
> (CPUID Fn0x0000000B) when the information is available.
>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> ---
> arch/x86/kernel/cpu/amd.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
> index 2c1a9f2..cdd67d1 100644
> --- a/arch/x86/kernel/cpu/amd.c
> +++ b/arch/x86/kernel/cpu/amd.c
> @@ -327,6 +327,7 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
>
> /* get information required for multi-node processors */
> if (boot_cpu_has(X86_FEATURE_TOPOEXT)) {
> + int err;
> u32 eax, ebx, ecx, edx;
>
> cpuid(0x8000001e, &eax, &ebx, &ecx, &edx);
> @@ -344,6 +345,14 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
> c->x86_max_cores /= smp_num_siblings;
> }
>
> + /*
> + * In case leaf B is avaialble, use leaf B to derive

s/avaialble/available/

--
Regards/Gruss,
Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--

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